JP2017146070A - Gas burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas burner easy to extract a jet valve or a filter to the outside of a windshield, and excellent in maintainability for a jet nozzle or the filter.SOLUTION: A gas burner is configured such that at a rear end 18 of a nozzle 19 of a nozzle block 5; a filter 24 and a jet nozzle 25 are provided; a nozzle block side air hole 26 is opened; the nozzle block side air hole 26 corresponds to a nozzle reception side air hole 15 of a nozzle reception 4; and in separation of the nozzle block 5 from the nozzle reception 4, the filter 24 and jet nozzle 25 provided at the rear end 18 of the nozzle 19 are separate from the nozzle reception 4.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gas burner such as a handy type or a desktop type.

  For gas burners that take the form of a handy type or tabletop type, the gas tank part is used as a tank for storing gas from the cartridge can or the supply source, and the outer part of the gas tank is covered on the upper part of the gas tank. A windshield is installed inside this windshield, and a nozzle that supplies gas from the gas tank to the rear end side and passes the air-fuel mixture is placed inside this windshield, and a crater block is attached to the tip side of the nozzle. There is a configuration one.

  In particular, the gas burner disclosed in Patent Document 1 is designed to have a low center of gravity by reducing the size of the main body of the burner so that it can be used for stationary work such as fine engraving. The nozzle that allows air to pass through incorporates an ejection valve and a filter inside the rear end bolted to the windshield so that gas from the gas tank is fed into this portion.

  There is a through hole in the nozzle in the radial direction that is close to the part where the filter is incorporated, and an air hole that communicates with the air-fuel mixture passage in the nozzle. The nozzle is rotatably attached to the outer periphery of the nozzle. The air hole can be adjusted by opening and closing the air hole.

  Furthermore, in the crater block to which the mixture of air and gas taken in from the air hole is directed, the crater body is screwed to the tip of the nozzle through the mounting plate provided in the windshield, and the crater block and the nozzle are connected together. By interposing the mounting plate of the windshield between them, the tip end side of the nozzle is fixed to the windshield, and the crater block is also fixed to the windshield.

  Note that the gas burner disclosed in Patent Document 1 is a piezoelectric ignition type gas burner, and a piezoelectric unit having a pusher that can be pushed down is provided on the side of the gas tank, and the above-mentioned crater of the crater block. The end of the lead wire of the piezoelectric unit was connected to an electrode disposed in the vicinity of the crater nozzle assembled to the main body.

JP 2000-186805 A

  By the way, the above-mentioned handy type gas burner has a size that can be held by hand, so it is used not only for metal processing such as engraving but also for various applications, but in a working environment where fine metal powder or oil drifts in the air. When the gas burner is used, fine oil contained in the air may be sucked into the nozzle from the air hole.

  Most of the metal powder and oil entering the nozzle are discharged toward the crater with the flow of the air-fuel mixture, but some of them remain near the air holes and adhere to the filter and the ejection valve. May end up. The adhesion of foreign matters such as metal powder and oil causes gas ejection failure and clogging of the ejection valve.

  When the ejection valve or filter is clogged by foreign matter entering through the air holes in this way, the attached dirt must be removed by hand, but the gas burner with the above structure with the burner body downsized is There has been a problem that the disassembling work until the nozzle arranged in the form stored in the windshield is removed is complicated.

  Therefore, in view of the above circumstances, the present invention has an object to make it easy to take out the part of the ejection valve and the filter from the windshield, has good maintainability for the ejection nozzle and the filter, and abundant variations of flames. An object of the present invention is to improve the merchantability of the gas burner.

(Invention of Claim 1)
The present invention has been made in consideration of the above problems, and is located inside the windshield, and a nozzle receiver into which gas is fed from the gas supply source side, and a nozzle into which the rear end is inserted into the nozzle receiver so that it can be inserted and removed. A gas burner comprising a crater block having
The nozzle receiver has a nozzle receiving side air hole at a portion where the rear end of the nozzle in the crater block is inserted, and an air adjusting ring for opening and closing the nozzle receiving side air hole on the outer periphery of the nozzle receiver. Can be rotated and mounted
At the rear end of the nozzle of the crater block, a filter and an ejection nozzle are provided, and a crater block side air hole is opened, and this crater block side air hole corresponds to the nozzle receiving side air hole. And
A gas burner characterized in that a filter provided at the rear end of the nozzle and the ejection nozzle are separated from the nozzle receiver at the time of separation from the nozzle receiver of the crater block, and solves the above problems. is there.

(Invention of Claim 2)
In the present invention, the windshield is provided with a positioning plate through which the nozzle of the crater block is passed to open a mounting hole for positioning the crater block with respect to the windshield, and the crater block having the nozzle passed through the mounting hole It is good that is fixed to the windshield with a stop screw.

  According to the present invention, since the filter and the ejection nozzle that are likely to be clogged when the gas burner is used are provided at the rear end of the nozzle of the crater block, the filter and the ejection nozzle are provided by removing the crater block. This makes it easier to clean the parts that have been cleaned.

It is explanatory drawing which shows embodiment of the gas burner which concerns on this invention in a cross section. It is explanatory drawing shown in the state which isolate | separated the crater block from the nozzle receptacle.

  Next, the present invention will be described in detail based on the embodiment shown in FIGS. In the figure, reference numeral 1 denotes a gas burner, and this gas burner 1 shown in the present embodiment is a piezoelectric ignition type gas burner. As shown in FIG. 1, a vertical gas tank 2 as a gas supply source and an upper part of the gas tank 2 are provided. The windshield 3 which is attached and is inclined so that the open part on the side faces slightly obliquely upward, the nozzle receiver 4 arranged and fixed inside the windshield 3, and the windshield 3 from the open part into the windshield 3 The crater block 5 is provided and a piezoelectric unit 6 disposed on the side of the gas tank 2 is provided.

  Since the gas burner 1 is of the piezoelectric ignition type, the lead wire 8 provided in the piezoelectric unit 6 covered with the pusher 7 passes through the inside of the windshield 3 as in the conventional piezoelectric ignition type gas burner. It enters the inside of the crater cover 9 of the crater block 5 and is connected to the electrode 11 disposed close to the crater nozzle 10.

(Nozzle receptacle)
The nozzle receiver 4 is fixed to the rear end wall 12 on the side opposite to the open portion of the windshield 3 and on the pusher 7 side inside the windshield 3 by screws. As shown in FIG. 2, the nozzle receiver 4 is connected to the gas tube 14 of the gas tank 2 so as to feed gas into a recessed hole 13 having a shape opened as a receiving port on the crater block 5 side.

  The nozzle receiver 4 has been devised to prevent the shaft from rotating, and the windshield 3 has a hanging wall-shaped positioning projection 3a extending integrally between the top of the windshield 3 and the rear end wall 12, and the nozzle receiver 4, a positioning groove 4a is provided in a portion corresponding to the positioning protrusion 3a. The positioning protrusion 3a is fitted into the positioning groove 4a, and the nozzle receiver 4 is attached to the rear end wall 12 as described above. The nozzle receiver 4 is prevented from rotating by screwing.

  Further, the front portion of the nozzle receiver 4 has a cylindrical shape so that a rear end of a nozzle described later in the crater block 5 can be inserted, and includes a through-hole that penetrates the cylindrical portion in the radial direction of the nozzle receiver 4. The nozzle receiving side air holes 15 are provided in pairs.

  Further, an air adjusting ring 16 is rotatably provided on the outer periphery of the cylindrical portion of the nozzle receiver 4 where the nozzle receiver side air hole 15 is opened. The air adjusting ring 16 adjusts the amount of outside air drawn into the rear end portion (rear end of the nozzle) of the crater block 5 attached to the nozzle receiver 4 by opening and closing the nozzle receiving side air hole 15. The handle 17 protrudes from the window portion opened at the top of the windshield 3, and the nozzle receiving side air hole 15 is opened and closed by moving the handle 17.

(Tinder block)
As shown in FIG. 2, the crater block 5 includes a nozzle 19 in which a rear end 18 is removably inserted into the concave hole 13 of the nozzle receiver 4, and an air-fuel mixture channel 21 at the tip 20 of the nozzle 19. A crater body 23 that is screwed to the mounting cylinder 22, the crater cover 9 that is held between the crater body 23 by screwing the crater body 23 to the nozzle 19, and a front portion of the crater body 23. The crater nozzle 10 and the electrode 11 close to the crater nozzle 10 so as to be held by an insulator inside the crater cover 9.

(Crater block nozzle)
The rear end 18 of the nozzle 19 in the crater block 5 is removably attached to the concave hole 13 of the nozzle receiver 4. The rear end 18 is fed into the concave hole 13 from the filter 24 and the gas tank 2. There is provided a fine-bore jet nozzle 25 that increases the flow rate of the gas and sends it toward the mixture channel 21. Further, a crater block side air hole 26 including a through-hole penetrating in the radial direction of the nozzle 19 is provided at a position in the vicinity of a portion where the ejection nozzle 25 is provided and so as to intersect the air-fuel mixture flow path 21.

  The crater block side air hole 26 is positioned corresponding to the nozzle receiver side air hole 15 provided in the nozzle receiver 4 by mounting the rear end 18 of the nozzle 19 in the recessed hole 13 of the nozzle receiver 4. Thus, the nozzle receiver side air hole 15 is opened in the nozzle receiver 4, and the crater block side air hole 26 is opened at the rear end 18 of the nozzle 19 in the crater block 5 that is detachably attached to the nozzle receiver 4. Since the crater block side air hole 26 corresponds to the nozzle receiver side air hole 15 and the air adjusting ring 16 is provided on the outer periphery of the nozzle receiver 4, the gas from the jet nozzle 25 The air drawn through the air adjusting ring 16, the nozzle receiving side air hole 15, and the crater block side air hole 26 is mixed and sent to the crater nozzle 10 through the mixture channel 21 of the nozzle 19. .

  The windshield 3 integrally includes a positioning plate 27 that supports the crater block 5. An attachment hole 28 is opened in the positioning plate 27. By passing the nozzle 19 of the crater block 5 through the attachment hole 28, the end 18 of the nozzle 19 is inserted into the concave hole 13 of the nozzle receiver 4. The crater block 5 is supported at two positions and assembled to the windshield 3.

  In order to prevent the crater block 5 from rotating about the central axis of the nozzle 19, it is possible to adopt a known method. In this embodiment, the inner periphery of the mounting hole 28 and the outer periphery of the nozzle 19 Two chamfered surfaces are provided opposite to both. Further, the position of the crater block 5 in the insertion direction is determined by bringing the nozzle 19 into contact with the nozzle receiver 4.

  Further, in the windshield 3, a set screw 29 is screwed from the top to a female screw through-hole opened at the position of the positioning plate 27, and this set screw 29 is brought into contact with the nozzle 19 of the crater block 5. The crater block 5 is fixed to the windshield 3.

  In the gas burner 1 having the above structure, the retaining screw 29 is removed and the crater block 5 is pulled out, so that the filter 24 and the ejection nozzle 25 can be taken out from the rear end 18 of the nozzle 19 and can be taken out from the crater side. It is possible to easily remove foreign matters such as wax entering the nozzle side and foreign matters attached around the filter 24 and the ejection nozzle 25.

  In addition, it is possible to prepare various crater blocks 5 in which the shapes of the crater nozzle 10 and the crater body 23 are changed in advance, and it is easy to increase flame variations by replacing the crater block 5 It becomes. It is also preferable to prepare a plurality of crater blocks 5 that are the same in advance, and a problem occurs in the crater block 5 due to foreign matter adhering to the filter 24 and the ejection nozzle 25 in the gas burner 1. Even in this case, the crater block 5 can be easily replaced, and the trouble can be dealt with quickly.

  Although the gas burner in the above embodiment is a piezoelectric ignition type, the present invention is not limited to the embodiment and can be applied to a gas burner other than the piezoelectric ignition type. In the embodiment, an example is shown in which an injection type gas tank 2 is used as a gas supply source as shown in FIG. 1. However, the gas supply source for sending gas to the nozzle receiver is limited to this embodiment. is not. For example, the gas supply source can be a mechanism for sending city gas to the nozzle receiver or a cartridge can (cassette cylinder) filled with gas. Furthermore, although the handy type that can be stationary is shown in the embodiment, it goes without saying that the present invention can be applied to various types of handheld types and desktop burners.

DESCRIPTION OF SYMBOLS 1 ... Gas burner 2 ... Gas tank 3 ... Windshield 4 ... Nozzle receptacle 5 ... Tinder block 9 ... Tinder cover 10 ... Tinder nozzle 13 ... Recessed hole of nozzle receptacle 14 ... Gas tube 15 ... Nozzle receptacle side air hole 16 ... Air control ring 18 ... Rear end of nozzle 19 ... Nozzle 21 ... Mixture flow path 23 ... Tinder body 24 ... Filter 25 ... Ejection nozzle 26 ... Tinder block side air hole 27 ... Positioning plate 28 ... Mounting hole 29 ... Stop screw

Claims (2)

A gas burner that is located inside the windshield and includes a nozzle receiver into which gas is sent from the gas supply source side, and a crater block having a nozzle into which the rear end of the nozzle receiver is removably inserted.
The nozzle receiver has a nozzle receiving side air hole at a portion where the rear end of the nozzle in the crater block is inserted, and an air adjusting ring for opening and closing the nozzle receiving side air hole on the outer periphery of the nozzle receiver. Can be rotated and mounted
At the rear end of the nozzle of the crater block, a filter and an ejection nozzle are provided, and a crater block side air hole is opened, and this crater block side air hole corresponds to the nozzle receiving side air hole. And
A gas burner characterized in that a filter and an ejection nozzle provided at the rear end of the nozzle are separated from the nozzle receiver when the crater block is separated from the nozzle receiver.   The windshield is provided with a positioning plate through which the nozzle of the crater block is passed to open a mounting hole for positioning the crater block with respect to the windshield, and the crater block through which the nozzle is passed is attached to the windshield by a stop screw. The gas burner according to claim 1, which is fastened.

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